At no point, whether you reload or not (which I know you said you aren't interested in but is a fantastic hobby in and of itself) does .45 ACP ever get cheaper than 9mm. ... You'd mentioned shooting .22 LR but unless you can find the ammo, which is starting to break free a bit, some of the better .22LR ammo out there is costing about what I can load 9mm pistol for!
in the end, you have to dedicate yourself to shooting .45 because you love the round, the history of it and the gun you shoot it out of otherwise moving to 9mm makes the most sense. it hurt when I had to do it, and I've sold off or traded all my .45 autos except for 2 and have pretty much decided to go with 9mm all across the board for carry, competition and fun.
Good luck and let us know where you end up!
This is sound advice